Desiccating apparatus.



' J. M. GABLEB-SALITER.

DESIGGATING APPARATUS.

APPLIOATION FILED MAR. 29, 1912.

Patented Dec. 1 0, 1912.

Inn

' desiccating milk and a are.

JOHANNVMZIECHAEL GABLERt- SALITER. OF OBERGI'L'YNZBURG, GERMANY. 7

DESICCATING APPARATUS.

Tcallwkom it may concern:

Beit known that I, JOHANN MICHAEL GABLER- A I ER, subject of the GermanEmresiding at Obergiinzburg,

peror, Algau, Bavaria, German Empire, have invented certain new anduseful Improvements in Desiccating Apparatus,- of which the follow ingis a specification. v. My invention relates to desiccating apparatus,and isv particularly applicable for like substances by a two-phasedesiccation in a single operation, the two-phasedesiccation step ofpartial desiccation in wow, and a second step of desiccation at arelatively higher pressure than that prevailing in the vacuum chamber;

This application, which is a division of my co-pending application filedOctober 4th, 1911, Serial Number 652,746, relates to the preferred formof apparatus for performing .the desiccation process above referred h. geeral terms. a f:

The invention is illustratively exemplified in the accompanying drawing,whereinvFigure l is a schematic view, parts-be ng shownin section, ofajplant to which my 1nvention is applied Fig. 2 is a detail sectiona-lview of a distinctive form of packing employed and Fig. 3 is a similarview of a modified form of packing. n I will: now proceed to=give adetailed description of my invention, course thereof the functions andcooperatlve relation of the several parts of the device.

The raw milk is fed through the pipe a 7 into anevaporating receptacle awherein a part of'the waterfcont-ained in the milk is evaporated. Thereceptacle 6; may be provided with a pipenb leading .to a vacuum pump(not shown) in order that thevaporiz at1on may be eflected in vacuo.After treatment in the receptacle a the partiallyconcentratedmilk-p'asses through the pipe 10, controlled by the cook;11, into a receiver 0 which is incommunioation' with the pump 12. Thepump forces the, milk through the pipe l3 into a-cooling chamber (1wherein the milk is cooled to 10?.-'5 0., dependent on the temperatureof .the water WhlCl'ljlS used in 01 for cooling purposes. passes throughthe pipe-14, cock 15 into The :milk then controlled by a a conta ner-ewhich communi- Specification of Letters Patent.

Original application filed October 4, 1911, Serial. No. 652,746. Dividedf 1912. Serial No. 687,054.

I plates ibetween space-or aperture/h is formed. These plates comprisinga first 'zontal plane that indicating in the type shown inF i PatentedDec. 10, 1912. and this application filed March 29,

cates with f extending outwardly from the container e the entirelengthof the drying drum 9 hereinafter described. The pipe f which isrevolublein bearings 7i, clamped to the containerfe has connectedthereto two which a narrow elongated are preferablyofunequal length asshown.

The container ,e is in communication with a slot Z formedin and'extending the entire length of the pipe f, and through the slot Z and.space-k the concentrated milk issues. The pipe f and plates 6 arecounterbalanced by a clamp lti carryi that the pipe fI may ings that theends toward the drum be so rotated in its bearof the 'Jlates z directedmay be on a higher horithe level of milk in the container e. By thisarrangement, and by the provisioriof a float 19, (indicated by a' dottedline) in the chambr e whichacts to cut ofl the supply of niilk tothelatter when the flow.- is toogreat, theissuance of milk from between theplatesv z' is suitably regulated. 1

The drum 9 is "fixed to a shaft 17 revoIu-Q 1 ble in suitable standardsor'bearings 1 8. As

the drum revolves it produces a suction action whereby the milk is drawnfrom between the plates 13 and causedto' spread;

as a uniformly thin stratum'or" layer like a band or ribbon, over.theentire thedrum. The'drum' gis heated by water or. steam (the meanstherefor not being shown) 'so that the outer face thereof has atemperatu-reof from 90 to 95" C. The stra- Y ga weight m, in orderperiphery of tum of milk on the periphery of the drum is qulckly heatedand by the revolution of the drum is carried into a vacuum chamberformed by the jacket n surrounding a part of the drum suitable airexcluding ackingo being interposed between the acket and drum. Althoughany suitable packing may be employed; I prefer to use'either the "g;-;2or that 1 shown in Fig. 3. -In the form illustrated in Fig. 2, Iprovidefaisection of corrugated metal o-which is coextensive inlengthwith the drum 9. At itslower end the metal section 0 is suitablyattached-to. the inturned end 9 of the casing 57,- nd is-held positionby rivets or bolts 20 see to the jacket- 41. In the form of Fig. 3,3..fdesignates amsection of a .u:

I gated metal which, however, stops short of a rivet the end or head ofthe drum 9'. The portion of the drum 9' between the end of, thecorrugated metal 0 and the extreme outer end of said drum is fluted, asshown at 9 and is covered by a short sect-ion of corrugated metal 0having a flange 0 secured by to the inturned end (1 of the easingq. Itis to be understood that the packing 0 need not be absolutely air-tight,inasmuch as the hot air and vapors arising within the vacuum chamber,and the revolution of the drum 9, serve in large part, to prevent theadmission of cold air. The jacket n is provided with apertures p throughwhich fermentation gases are drawn off in a manner hereinafterexplained. The acket n is inclosedby an exterior jacket or casing q,havingbranch pipes 1*, s, t leading to a main exhaust pi e u, wherein afan '1) having the pulley w, is driven to constantly produce a moderatevacuum in the jackets n and 9.

Within the jackets 'n, and q the partial desiccation in 'vacuo occurs,and the fermentation vapors, as quickly as they are generated, aresucked by the fan '0 through the apertures 7) and are carried out of theapparatus without being given opportunity to come into contact with thelayer of milk on the drum g.

After the layer of milk passes the vacuum chamber formed by the jacket71-, it revolves with the drum in the open air, for the space of timerepresented by the distance from the left hand packing 0 to" the scraperw, and the desiccation is thus completed as a continuous process by theopen air method. The scraper :0 serves to remove the milk from the drum,the desiccated milk falling onto a conveyer y by which it is carriedinto the receiver a or to any other desired place and after being againcooled is in condition to be packed and shipped.

Having thus described my invent-ion, what I claim as new and desire tosecure by Letters Patent is 1. In desiccating apparatus, the combinationwith a drum having a vacuum chamber partially surrounding the same, ofmeans for revolving said drum, and means for feeding the substances tobe desiccated to the periphery of the drum.

2. In desiccating apparatus, the combination with a drum and means forrevolving the same, of a casingpartially surrounding said drum, andmeans adapted to create a vacuum in said casing.

3. In desiccating apparatus, the combination with a drum and means forrevolving the same, of a perforated'casing partially surrounding saiddrum, and a fan adapted to create a vacuum in said casing.

4. In desiccating. apparatus, the combination with a receptacle forcontaining the substances to be desiccated, of means through which saidsubstances are adapted to pass in the form of a thin layer'or stratum, adrum in proximity to said means and adapted to receive said substancestherefrom, a casing partially surrounding said drum,'and means adaptedto create a vacuum in said casing.

5. In desiccating apparatus, the combination with a drum and a vacuumchamber partially surrounding the same, of a container for the substanceto be desiccated, means for directing said substance in a thin layer orstratum onto the periphery of the drum, and means for creating a vacuumin said chamber.

6. In desiccating apparatus, the combination with a drum and a vacuumchamber partially surrounding the same, of means for directing thesubstance to be desiccated in a thin layer or stratum onto said drum,and means adapted to simultaneously create a vacuum in said chamber, andexhaust the vapors from said chamber.

7. In desiccating apparatus, the combination with a drum and means forrevolving the same, of a perforated jacket partly surrounding said drum,an imperforate casing coextensive with said jacket, there being a vacuumchamber formed between said drum and easing, packing interposed betweenthe ends of the jacket and the drum, and means for feeding the substanceto be desiccated onto the periphery of the drum.

8. In desiceating apparatus, the combination with a drum and a vacuumchamber partially surroundingthe same, of a container for the substanceto be desiccated,

and means communicating with said container and automatically adjustablerelatively to said drum for feeding said substance onto the periphery ofthe drum.

9. In desiccating apparatus, the combination with a drum and a vacuumchamber partially surrounding the same, of a container for the substanceto be desiccated, a pipe extending outwardly from said container, and apair of spaced plates in communication with said pipe and adapted tofeed the substance to be desiccated from the container to the peripheryof the drum.

10. In desiccating apparatus, the combination with a drum, of aperforated jacket partially surrounding the same, packing interposedbetween each end of the jacket and the drum, :1 container forthesubstance to be desiccated, and adjustable means for feeding saidsubstance in a layer or stratum from said container onto said drum.

11. In desiccating apparatus, the combination with a drum, of aperforated jacket partially surrounding the same, packing interposedbetween each end of the jacket and the drum, an imperforate casingsurr0unding the jacket and the portion of the drum coextensive, with thelatter, there being a vacuum chamber formed between the drum andcasing-a fan in said vacuum chamber for creating a' partial vacuumtherein a container for the substance to be desiccated, a pipe revolublein said container and :ex-

'tending outwardly therefrom parallel to the drum, and a par of spacedplates in communication with said pipe and adapted to feedsaid substancefrom the container onto the periphery of the drum.

10 In testimony whereof I have aflixed 'm'y gnature in presence of twoWitnesses." I JOHANN MICHAEL GABLER-SALITERJ Witnesses:

RUDOLF AICKELIN,

ANTON NAUER.

Copies oi this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. 6.

